RE: New D5100 user
Hello Folks,
Why does my lowest F-Stop hinge on the focal length used? On the D5100 + 18-55mm lens, I get F5.6 @ 55mm & F3.5 @ 18mm. I realize that the 3.5 - 5.6 label is shown on the lens, but not sure why F3.5 can't be used at 55mm; it must be optics Physics issue?
Thanks,
John
Hello Folks,
Why does my lowest F-Stop hinge on the focal length used? On the D5100 + 18-55mm lens, I get F5.6 @ 55mm & F3.5 @ 18mm. I realize that the 3.5 - 5.6 label is shown on the lens, but not sure why F3.5 can't be used at 55mm; it must be optics Physics issue?
Thanks,
John